<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="root">页面无内容</div>
    <button id="btn">加载js</button>

    <script>
      document.getElementById("btn").onclick = function () {
        import("./test.js").then((d) => {
          d.test();
        });
      };
    </script>
  </body>
</html>
